CN102739917A - Image processing apparatus, image forming apparatus, image processing method, and computer-readable storage medium - Google Patents
Image processing apparatus, image forming apparatus, image processing method, and computer-readable storage medium Download PDFInfo
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- CN102739917A CN102739917A CN2012101051209A CN201210105120A CN102739917A CN 102739917 A CN102739917 A CN 102739917A CN 2012101051209 A CN2012101051209 A CN 2012101051209A CN 201210105120 A CN201210105120 A CN 201210105120A CN 102739917 A CN102739917 A CN 102739917A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
- G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
- G03G15/5041—Detecting a toner image, e.g. density, toner coverage, using a test patch
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/56—Processing of colour picture signals
- H04N1/58—Edge or detail enhancement; Noise or error suppression, e.g. colour misregistration correction
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/01—Apparatus for electrophotographic processes for producing multicoloured copies
- G03G2215/0151—Apparatus for electrophotographic processes for producing multicoloured copies characterised by the technical problem
- G03G2215/0164—Uniformity control of the toner density at separate colour transfers
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Abstract
An image processing apparatus includes a character identifying unit configured to identify character data of black from color image data; a character data generating unit configured to add character data of a color other than black to the character data of black as additional character data to generate combined character data; and a character data correcting unit configured to perform thinning process of making a line of a character of the additional character data thinner than a line of the character data of black.
Description
Technical field
The present invention relates to image processing equipment, image forming apparatus and image processing method.
Background technology
Traditionally; Among image forming apparatus such as printer, photocopier and multi-function peripheral (MFP); For example, in the image forming apparatus of electrofax, in some cases; Image-carrier such as light-sensitive element worsens, and causes the inhomogeneous image degradation that causes of transfer printing owing to solid area in the image (solid area) and character.Particularly; In the image forming apparatus of the artistic box (process cartridge) that uses light-sensitive element (image-carrier) and the developing cell of laying toner (Image forming material) to be together with each other; If the quantitative change of residue toner is few and approach so-called toner near using up (toner-near-end), the transfer printing that then occurs single color black (K) significantly is inhomogeneous.If inhomogeneous, shown in figure 10 such as the uneven image of transfer printing, then gradation of drop-out colour reduces, image, and more specifically character is thin out, causes deterioration of image quality.
In addition, shown in figure 11 traditionally, form the solid black district with the mode like this of cyan (C), pinkish red (M), yellow (Y) and four kinds of colour superimpositions of K.Prevent like this owing to such as inhomogeneous deterioration of image quality that causes of the uneven image of transfer printing or the like.
Yet, preventing such as transfer printing in the uneven conventional method of uneven image through printing with four kinds of color CMYK, be printed on the image area of printing with single color K under the normal condition such as text and figure with four kinds of color CMYK.Therefore, (multiple) that be used to print in use consumes a large amount of toners when color prints, and occurs misalignment simultaneously, causes deterioration of image quality.
Japanese Unexamined Patent Publication No 2009-190347 discloses following.Analysis of image data extracts the character area of being made up of the character of the saturation with the predetermined value of being equal to or less than.Then, character area is divided into character outline part and character interior section.In addition, the view data of the view data of character outline part and character interior section is converted into the China ink amount data of at least a achromaticity China ink and at least three kinds of color ink.In this case, convert the view data of each part into China ink amount data, so so that in the character interior section than in the character outline part, using more color ink.Use this method, form and to have the less fuzzy character of knowing.
Yet, in the conventional art of in Japanese Unexamined Patent Publication No 2009-190347, describing, not only with color K but also with color CMYK printable character.Therefore, among color CMYK, there is the problem that occurs misalignment easily, causes deterioration of image quality.
Therefore, need to suppress the inhomogeneous and misalignment of transfer printing so that improve picture quality, reduce image processing equipment, image forming apparatus and the image processing method of the consumption of Image forming material simultaneously.
Summary of the invention
The objective of the invention is to solve at least in part the problem in the conventional art.
According to embodiment, a kind of image processing equipment is provided, comprising: the character mark unit is configured to sign black character data from color image data; The character data generation unit is configured to the character data of the color except black is added in the black character data as adding character data, to generate the combining characters data; And the character data correcting unit, be configured to carry out the line thinning process thinner that makes the character that adds character data than the line of black character data.
According to another embodiment, a kind of image forming apparatus is provided, comprise image processing equipment according to above embodiment.
According to another embodiment, a kind of image processing method is provided, comprising: sign black character data from color image data; Through adding the character data of the color except black in black character data generation combining characters data as adding character data; And the line thinning process thinner of carrying out the character that makes the interpolation character data than the line of the character data of black.
When combining accompanying drawing to consider together,, will understand above-mentioned and other purposes, characteristic, advantage and technology and industrial significance of the present invention better through reading the following detailed description of the preferred embodiments of the present invention.
Description of drawings
Fig. 1 is the block configuration diagram that the critical piece (main part) of the colour print machine equipment of using the embodiment of the invention is described;
Fig. 2 is the view that character is added in refinement on main scanning direction and time scanning direction;
Fig. 3 is the descriptive view of explaining based on the thinning process of pixel count;
The descriptive view of the thinning process that Fig. 4 A and 4B carry out when being the explanation pixel count that adjusting will reduce according to font size;
Fig. 5 is that explanation is provided with the view of setting the refinement pixel count in the misalignment scope based on the standard of image formation unit;
Fig. 6 explains the descriptive view that adds thick black (rich-black) process that in black character, adds the cyan character;
Fig. 7 explains to have the descriptive view that adds the thick black process that character is added in refinement;
Fig. 8 is the flow chart that explanation has the necessity deterministic process that adds the thick black process of refinement;
Fig. 9 is the flow chart that explanation has the image forming course that adds the thick black process control;
Figure 10 is the view that occurs the uneven state of transfer printing in the explanation conventional art; And
Figure 11 explains in conventional art the descriptive view that prevents the uneven situation of transfer printing through combined colors CMYK.
Embodiment
With preferred embodiments of the present invention will be described in detail with reference to the annexed drawings.It should be noted,, therefore done various technical preferred specific limited because following examples are the preferred embodiments of the present invention.Yet, the scope of the present invention that exceedingly do not limit is below described, all configurations of describing in the present embodiment neither the necessary configuration requirement of the present invention.
Fig. 1 to Fig. 9 is the view of explanation according to the embodiment of image processing equipment of the present invention, image forming apparatus, image processing method, image processing program and storage medium.Fig. 1 is the block configuration diagram of application according to the critical piece of the colour print machine equipment 1 of the embodiment of image processing equipment of the present invention, image forming apparatus, image processing method, image processing program and storage medium.
In Fig. 1, colour print machine equipment (image forming apparatus) 1 comprises control unit 2, guidance panel 3, image formation unit 4 and concentration sensor 5.Control unit (image processing equipment) 2 comprises CPU (CPU) 11, read-only memory (ROM) 12, nonvolatile RAM (NVRAM) 13, A/D converter 14, font processor 15, data receiver 16, panel control unit 17 and test pattern maker 18.
In colour print machine equipment 1, be connected to the data receiver 16 of control unit 2 through network such as the main process equipment of computer such as Local Area Network.Data receiver 16 comprises the print data (view data) of RGB (red, green and blue) or the like and the print job of setting of printing from printed driver 20 receptions that are installed on the main process equipment.
For image formation unit (spot (patch) forms the unit) 4, use the coloured image of electrofax to form the unit.Though not shown in the accompanying drawings, image formation unit 4 comprises with electrophotographic system carries out the required parts of print processing on paper based on the drawing data (color draw data) of CMYK or the like color.For example, image formation unit 4 comprises light-sensitive element (image-carrier), charhing unit, light writing unit, developing cell, transfer printing unit and cleaning unit.Light-sensitive element is arranged in parallel to be carried on the transport path of paper (image-carrier) from the paper feed unit.Charhing unit charges for light-sensitive element equably.Through the laser beam that emission is modulated based on the color image data on the light-sensitive element that sends to uniform charging from control unit 2, the light writing unit forms electrostatic latent image.Developing cell is supplied the toner (Image forming material) of corresponding color to each light-sensitive element that forms electrostatic latent image above that, so that form toner image.Transfer printing unit is transferred to the toner image on the light-sensitive element on the paper.After transfer printing, the residue toner on the cleaning unit clear light photosensitive elements.On image formation unit 4; With color drawing data and control signal operational light writing unit; So that on each light-sensitive element of each color of uniform charging, form the electrostatic latent image of each color for each color (for example, each color of cyan (C), pinkish red (M), yellow (Y) and black (K)).Then, supply the toner of each color, and they are developed on the light-sensitive element of corresponding color, so that form the toner image of each color through developing cell.Image formation unit 4 is carried out print processing with the following methods.That is, image formation unit 4 is presented paper by the paper feed unit between the light-sensitive element of each color and transfer printing unit, the toner image on the light-sensitive element of each color sequentially is transferred on the paper with the double exposure mode, so that form the color toner image.Then, image formation unit 4 will be above that the paper of transfer printing color toner image be transported to fixation unit so that through by fixation unit to the there apply heat and pressure with the color toner image fixing to paper.It should be noted that paper or each light-sensitive element of forming the object of toner image (image of Image forming material) as image formation unit 4 above that are represented as the image-carrier 30 among Fig. 1.
Notice that image formation unit 4 is not limited to have above configuration.For example; Image formation unit 4 can have following configuration; Wherein, the toner image of each color that a light-sensitive element or be used for is formed on a plurality of light-sensitive elements of each color sequentially is transferred to the intermediate transfer member as image-carrier, so that form the color toner image; And the color toner image on the intermediate transfer member is transferred on the paper, or the like.In addition, image formation unit 4 is not limited to the image formation unit of electrofax.For example, image formation unit 4 can be the ink jet type image formation unit.Yet, in the present embodiment, under the condition of supposing the image formation unit that uses electrofax, make following description.
Colour print machine equipment 1 is configured to install the image forming apparatus of following image processing equipment above that.Image processing equipment operation has the image processing method of (interpolation color) thinning process of the live width of the character that adds the color that another color will add to black character and refinement, and it will be described after a while.Through read operation according to the image processing program of image processing method of the present invention and load image handling procedure in ROM 12, NVRAM 13, hard disk (not shown) or the like, the runs image processing method.Image processing program is recorded in the computer-readable recording medium, such as ROM, electric erasable and programmable read only memory (EEPROM), EPROM, flash memory, floppy disk, compact disk read-only memory (CD-ROM) but rewriteable compact disc (CD-RW), digital universal disc (DVD), secure digital (SD) card and magneto optical disk (MO).Image processing program is to use such as assembler language and C or the program described such as traditional programming language of the Object-Oriented Programming Language of C++, C# and Java (registered trade mark), and can use computer run.Image processing program can be stored in the above storage medium, so that distribution.
If CPU 11 receives the print data and the setting of printing of having sent from printed driver 20 through data receiver 16; Then the print data (view data) on 11 pairs of image formation units 4 of CPU is carried out image processing required when the print processing of carrying out through the setting of printing appointment; Particularly; Handle (hereinafter to rasterizing from rgb image data such as the drawing data of the data bitmap of CMYK or the like; Under drawing data and the corresponding situation of CMYK view data, make description).In addition, when rasterizing was handled, it is definite that CPU 11 makes 15 operations of font processor have the necessity that adds the thick black process of adding the color thinning process, and if necessary the color thinning process is added in operation.
In addition, regularly predetermined, CPU 11 is stored in colour chart appearance (spot) data among NVRAM 13 or the ROM 12 to 18 outputs of test pattern maker.Then, test pattern maker 18 generates test pattern Pt, and test pattern Pt is outputed to image formation unit 4.Make image formation unit 4 on image-carrier 30 form test pattern Pt thereafter.
For example, concentration sensor (concentration detecting unit) 5 is formed by reflective optical sensor.Concentration sensor 5 detects the concentration of each color of test pattern Pt, and exports the simulated concentration detection signals to the A/D converter 14 of control unit 2.
A/D converter 14 will convert digital signal to from the simulated concentration detection signal of concentration sensor 5 inputs, and digital signal is outputed to CPU 11.
It should be noted that owing to the concentration change in time usually of the image (print image) that is formed by image formation unit 4, then colour print machine equipment 1 has following configuration.Colour print machine equipment 1 detects the concentration of test pattern in predetermined regularly printed test pattern on image formation unit 4.Predetermined timing comprises the timing when power connection, the timing when having printed the paper of specified quantity, and the timing when customer requirements.In addition, colour print machine equipment 1 determines whether to appear transfer printing based on the testing result of test pattern concentration inhomogeneous, and carry out the concentration correction of proofreading and correct such as γ.Notice that above test pattern maker 18 and concentration sensor 5 can adopt the test pattern maker that colour print machine equipment 1 generally includes and the configuration of concentration detector.
The various data that the initial set value of NVRAM 13 general each function of storing therein and storing therein operation control unit 2 under the control of CPU 11 is required.
When carrying out when adding thick black and printing to black character through adding another color; Under the control of CPU 11, font processor (character data correcting unit) 15 is carried out the thinning process of live width that refinements will be added the character (interpolation character) of the color of black character to.In adding the thinning process of character, as shown in Figure 2,15 of font processors main scanning direction, only in inferior scanning direction, or not only carried out thinning process at main scanning direction but also in inferior scanning direction.In addition, when the rgb image data that sends to the CMYK drawing data from main process equipment as 11 couples of CPU was carried out rasterizing and handled, 15 pairs of font processors added character and carry out thinning process.
In the thinning process that adds character; When the unit of refinement is set to the pixel from the data of image formation unit 4 outputs; Font processor 15 basically through preestablish be used for refinement pixel count (hereinafter; Be called and set the refinement pixel count) carry out thinning process, the pixel of output image data is reduced the pixel of setting refinement pixel count.Yet, depend on that from the pixel count of the data of image formation unit 4 output output resolution ratio changes.Therefore, proofread and correct the pixel count (hereinafter, being called actual refinement pixel count) of in fact wanting refinement with output resolution ratio.For example; As shown in Figure 3; When the line of the line character of character is set to refinement 3 pixels (is the setting refinement pixel count of 600dpi as resolution), and during with the resolution output image data of 1200dpi, the actual refinement pixel count of font processor 15 operations is set to the thinning process of 6 pixels.It should be noted that Fig. 3 explanation is carried out the thinning process of the shallow dash area of compression so that form the situation of the interpolation character that only has dark dash area to the interpolation character of 9 pixels that dark shade and shallow shade are combined.In other words, font processor 15 changes actual refinement pixel count according to output resolution ratio.
In addition, in thinning process, font processor 15 can be through confirming actual refinement pixel count according to font size calibration setup refinement pixel count.In some cases, when the setting refinement pixel count of carrying out refinement was set, if through this setting refinement pixel count of line thinning of character is carried out thinning process, then depend on font size, character disappeared.For example, shown in Fig. 4 A and 4B, suppose that setting the refinement pixel count is " 3 pixel ".In this case, shown in Fig. 4 A, when font size when being big, even when the thinning process carried out the line thinning " 3 pixel " (setting the refinement pixel count) of character, character can not disappear yet.Yet shown in Fig. 4 B, with regard to the character font with the font size that is formed by 3 pixels, if the line thinning of character " 3 pixel " (setting the refinement pixel count), character disappears.Under situation like this, for example, font processor 15 is carried out the thinning process of surplus at least next pixel.
Situation about not only carrying out at main scanning direction but also in inferior scanning direction the thinning process of the line thinning equal number pixel of character has below been described.Yet, thinning process be not limited to not only main scanning direction but also in inferior scanning direction with the thinning process of the line thinning equal number pixel of character.For example, also can only carry out the thinning process of the line of refinement character in the perhaps inferior scanning direction of main scanning direction.Perhaps, can carry out the thinning process of the line varying number pixel of refinement character in main scanning direction and time scanning direction.In addition, in thinning process, can the pixel count of main scanning direction and time scanning direction be arranged in the scope based on the misalignment of the standard of image formation unit 4.For example, as shown in Figure 5, pixel count can so be set, so that be set to refinement Pa pixel at main scanning direction, be set to refinement Pb pixel in inferior scanning direction.
Next, the action of embodiment is described.Generate the character data of the character of print data according to the colour print machine equipment 1 of embodiment in the color K through adding a kind of color in three kinds of colors of CMY.In addition, 1 refinement of colour print machine equipment and interpolation should be added character.
As stated, in colour print machine equipment 1, if transfer printing to occur inhomogeneous owing to deterioration of light-sensitive element or the like, then gradation of drop-out colour reduces, image, and particularly, character is thin out, causes deterioration of image quality.In addition, if as in conventional art, carry out and print through four kinds of colors of combination CMYK, then consume in a large number Image forming materials, and when the color that use is used to print prints, misalignment occurs such as toner, cause deterioration of image quality.
In order to address this problem; In colour print machine equipment 1 according to embodiment; If the uneven risk of the transfer printing of appearance is arranged, then when printing the K character, through adding a certain color among the CMY; For example, as shown in Figure 6 C character with same font size is added to the K character and generates the combining characters image as adding character.In addition, carry out the thinning process that character is added in refinement, then, add character, as shown in Figure 7.It should be noted that the color of adding the K character to is not limited to C, also can be M or Y.
Even when adding character and be set to a kind of color, if between the character of a kind of color of K character and interpolation, misalignment occurs, then deterioration of image quality is as shown in Figure 6.
In order to address this problem, in colour print machine equipment 1, as shown in Figure 7 according to embodiment; Carry out the thinning process that the line of character is added in refinement by font processor 15; Then, carry out have a refinement add the thick black process, wherein the interpolation character is added in the K character.
In addition, colour print machine equipment 1 based on the printed driver that result or main process equipment are set 20 the result being set of the operation of the key of user on guidance panel 3 and determine whether to carry out have a thinning process add the thick black process.In addition, colour print machine equipment 1 based on the concentration of test pattern Pt and determine whether automatically to carry out have a thinning process add the thick black process, as shown in Figure 8.Can be provided with whether carry out confirming automatically of the operation necessity that adds the thick black process through the key on the operating operation panel 3.It should be noted; When the user determines whether that through manual operation execution adds the thick black process; For example, the user is through observing actual printed material and confirm and being provided with to be provided with whether to carry out on the project and adding the thick black process at the guidance panel 3 of the printed driver 20 of main process equipment or colour print machine equipment 1.
At first, describing the automatic of operation necessity that adds the thick black process with reference to figure 8 confirms.Colour print machine equipment 1 is at the predetermined colour chart appearance Pt that regularly on image-carrier 30, forms.Then, colour print machine equipment 1 based on the testing result of the concentration of test pattern Pt and determine whether to move have a thinning process add the thick black process, as shown in Figure 8.
In colour print machine equipment 1; CPU 11 arrives test pattern maker 18 in the test pattern data that predetermined timed sending is stored among ROM 12 or the NVRAM 13, and test pattern maker 18 makes image formation unit 4 on image-carrier 30, form test pattern Pt (step S101).
The concentration (step S102) of the test pattern Pt that forms on the colour print machine equipment 1 usefulness concentration sensor 5 detected image carrier 30 as one kind.Then, colour print machine equipment 1 outputs to the A/D converter 14 of control unit 2 with the simulated concentration detection signal, and A/D converter 14 converts the simulated concentration detection signal into digital signal, and the digital signal (step S103) that converts to CPU 11 outputs.
If less than threshold value, then CPU 11 sets font to handle and is masked as ON, with the necessity deterministic process (step S106) of terminates enriching black process in the concentration of step S104 test pattern Pt.
Then, colour print machine equipment 1 is carried out and added the thick black process, and is as shown in Figure 9.If colour print machine equipment 1 receives the print job that comprises print data and setting of printing from main process equipment; Then during the print data in will printing this print job, CPU 11 at first checks and adds thick black procedure command sign and whether be set to ON (step S201) through the manual setting on the guidance panel 3.Whether add thick black procedure command sign indication user orders operation to handle (suitably abbreviate as hereinafter, and add the thick black process) like the font that adds the thick black process that has thinning process.If there is not the thick black of adding order sign to be set to ON, then CPU 11 checks and confirms automatically whether permission flag is set to ON (step S202).Automatically confirm that permission flag indicates whether to follow the result of the necessity deterministic process that adds the thick black process.
If confirm automatically that at step S202 permission flag is set to ON, then CPU 11 check as with reference to figure 8 in the described necessity deterministic process that adds the thick black process font handle sign and whether be set to ON (step S203).If font is handled sign and is set to ON; Then CPU 11 obtains from setting of printing, output printing data is with the output resolution ratio when image formation unit 4 is printed; So that confirm to add the amount (being called hereinafter, " refinement amount ") (step S204) of character based on output resolution ratio by 15 refinements of font processor.
Next, CPU 11 confirms whether determined refinement amount is suitable for the font sizes of adding character,, adds character whether can not disappear (step S205) that is.If the refinement amount is unsuitable, then CPU 11 proofreaies and correct the refinement amount based on the font size shown in Fig. 4 A and the 4B, then correcting value is sent to font processor 15 (step S206).
Carrying out rasterizing when the 11 pairs of print datas of CPU handles so that form can be printed on the drawing data on the image formation unit 4 time; CPU 11 makes font processor 15 carry out thinning process based on the refinement amount of being proofreaied and correct to adding character, and carries out font processor 15 added to its interpolation character of having carried out thinning process and add thick black process (step S207) in the corresponding character data of drawing data.Then, CPU 11 will carry out the drawing data that adds the thick black process to it and send to image formation unit 4, so that in image formation unit 4, carry out images printed forming process (step S208).
At step S205; If determined refinement amount is unsuitable for font size; Then process advances to S207; Handle so that form to be printed on the drawing data on the image formation unit 4 time when print data being carried out rasterizing; CPU 11 makes font processor 15 be based on refinement amount that step S204 confirmed and carries out thinning process to adding character, and carries out and add thick black process (step S207) with its interpolation character of having carried out thinning process being added in the corresponding character data of drawing data.Then, CPU 11 will carry out the drawing data that adds the thick black process to it and send to image formation unit 4, so that in image formation unit 4, carry out images printed forming process (step S208).
In addition, be set to OFF if handle sign in step S203 font, then 11 pairs of print datas of CPU are carried out the normal rasterizing that does not add thick black process (font processing) and are handled (step S209).Then, CPU 11 will send to image formation unit 4 to its drawing data of having carried out the rasterizing processing, so that in image formation unit 4, carry out images printed forming process (step S208).
In addition, if do not have to confirm that automatically permission flag is set to ON at step S202, then 11 pairs of print datas of CPU are carried out the normal rasterizing that does not add thick black process (font processing) and are handled (step S209).Then, CPU 11 will send to image formation unit 4 to its drawing data of having carried out the rasterizing processing, so that in image formation unit 4, carry out images printed forming process (step S208).
In addition; Be set to ON if add thick black procedure command sign at step S201; Then process advances to step S204, and CPU 11 carries out with the above-mentioned output printing data that from setting of printing, obtains and confirms the identical processing of processing by the amount of font processor 15 refinements interpolation character with the output resolution ratio when image formation unit 4 is printed so that based on output resolution ratio.CPU 11 carries out and adds the thick black process with its interpolation character of having carried out thinning process being added in the corresponding character data of drawing data; Then; Drawing data after handling is sent to image formation unit 4, so that in image formation unit 4, carry out images printed forming process (step S204 to S208).
In such a way, in colour print machine equipment 1, play character and confirm that the CPU 11 of unit effect discerns the black character data from color image data according to embodiment.The CPU 11 that plays the effect of character generation unit adds the character data of the color except black in the black character data to as adding character data, to generate the combining characters data.In addition, the CPU 11 that plays the effect of character data correcting unit carries out the line thinning process thinner than the line of black character data that makes the character that adds character data.
Correspondingly; The character that in through the black character data in will image data processed, adds another color makes adding in the thick black process of black enriching; Can a kind of color except black be added in the black character, and can make thinner and this interpolation character of interpolation of interpolation character.Therefore, can reduce consumption such as the Image forming material of toner.In addition, can prevent and add character and be seeped in (run off) black character and misalignment occur, cause the problem of deterioration of image quality.
In addition; In the colour print machine equipment 1 according to embodiment, the font processing unit 5 that plays the effect of character data correcting unit is carried out the thinning process of line of character that the interpolation character data of black character data is added in refinement at least one direction of main scanning direction and time scanning direction.
Correspondingly, in adding the thick black process, can the character of a kind of color except black be added in the black character, and can be suitably and make easily that to add character thinner, and add and should add character.Therefore, can reduce consumption such as the Image forming material of toner.In addition, can be suitably and easily prevent and add the problem that character is seeped in the black character, causes deterioration of image quality.
In addition, in the colour print machine equipment 1 according to embodiment, the font processing unit 5 that plays the effect of character data correcting unit is carried out the thinning process of line that the character of character data is added in refinement based on the pixel of black character data.
Correspondingly, in adding the thick black process, can the character of a kind of color except black be added in the black character, and can be suitably and make easily that to add character thinner, and add and should add character.Therefore, can reduce consumption such as the Image forming material of toner.In addition, can be suitably and easily prevent and add the problem that character is seeped in the black character, causes deterioration of image quality.
In addition; In the colour print machine equipment 1 according to embodiment, the font processing unit 5 that plays the effect of character data correcting unit is according to the thinning process of appointment as the line of the character of the appointment output resolution ratio execution refinement interpolation character data of the resolution of output image data.
Correspondingly, in adding the thick black process, can the character of a kind of color except black be added in the black character, and can be suitably and make easily that to add character thinner, and add and should add character.Therefore, can reduce consumption such as the Image forming material of toner.In addition, can be suitably and easily prevent and add the problem that character is seeped in the black character, causes deterioration of image quality.
In addition, in the colour print machine equipment 1 according to embodiment, the font processing unit 5 that plays the effect of character data correcting unit is carried out the thinning process of line that the character of character data is added in refinement based on the font size of black character data.
Correspondingly, in adding the thick black process, can the character of a kind of color except black be added in the black character, and can be suitably and make easily that to add character thinner, and add and should add character.Therefore, can reduce consumption such as the Image forming material of toner.In addition, can be suitably and easily prevent and add the problem that character is seeped in the black character, causes deterioration of image quality.
In addition; In the colour print machine equipment 1 according to embodiment, the font processing unit 5 that plays the effect of character data correcting unit is carried out the thinning process of line that the character of character data is added in refinement in the scope of the maximum color departure of the output resolution ratio of view data.
Correspondingly, in adding the thick black process, can the character of a kind of color except black be added in the black character, and can also suitably make the interpolation character thinner, and add and to add character.Therefore, can reduce consumption such as the Image forming material of toner.In addition, can also suitably prevent the problem that the interpolation character is seeped in the black character, causes deterioration of image quality.
In addition; Colour print machine equipment 1 according to embodiment forms test pattern Pt through image formation unit (spot formation unit) 4 on image-carrier 30; As the solid spot of single at least color black, detect the concentration of test pattern Pt through concentration sensor (concentration detecting unit) 5.Then, CPU 11 is based on the concentration of the test pattern Pt that detects and the generation of control combination character data and the thinning process of font processor (character data correcting unit) 15.
Correspondingly, suitably judge the uneven risk of image to occur, if the uneven risk of the image of appearance is arranged, then carry out have a thinning process add the thick black process.Like this, can the character of a kind of color except black be added in the black character, and can be suitably and make easily that to add character thinner, and add and should add character.Therefore, can reduce consumption such as the Image forming material of toner.In addition, can also suitably prevent the problem that the interpolation character is seeped in the black character, causes deterioration of image quality.
In addition, in colour print machine equipment 1 according to embodiment, if the concentration of the test pattern Pt that concentration sensor 5 has detected less than predetermined threshold concentration, then CPU 11 generates the combining characters data, and the thinning process of carrying out font processor 15.
Correspondingly, judge suitably the uneven risk of image to occur that if the uneven risk of the image of appearance is arranged, then execution adds the thick black process.Like this, can the character of a kind of color except black be added in the black character, and can be suitably and make easily that to add character thinner, and add and should add character.Therefore, can reduce consumption such as the Image forming material of toner.In addition, can also suitably prevent the problem that the interpolation character is seeped in the black character, causes deterioration of image quality.
According to embodiment, can suppress the inhomogeneous and misalignment of transfer printing, so that improve picture quality, reduce the consumption of Image forming material simultaneously.
Though made complete and description clearly to the present invention according to specific embodiment; But therefore do not limit accompanying claims; But should accompanying claims be interpreted as: in the basic instruction that falls within this statement fully, comprise all modifications and the alternative structure that possibly occur to those skilled in the art.
Claims (10)
1. image processing equipment comprises:
The character mark unit is configured to sign black character data from color image data;
The character data generation unit is configured to the character data of the color except black is added in these black character data as adding character data, to generate the combining characters data; With
The character data correcting unit is configured to carry out the line thinning process thinner than the line of these black character data of the character that makes this interpolation character data.
2. image processing equipment as claimed in claim 1 is wherein carried out the thinning process that the line of the character that adds character data is somebody's turn to do in refinement on this character data correcting unit at least one direction in main scanning direction and time scanning direction.
3. image processing equipment as claimed in claim 1, wherein this character data correcting unit is based on the pixel of these black character data and carry out the thinning process of line of the character of this interpolation character data of refinement.
4. image processing equipment as claimed in claim 1, wherein this character data correcting unit is according to specifying the thinning process of line of carrying out the character of this interpolation character data of refinement as the appointment output resolution ratio of the resolution of this view data of output.
5. image processing equipment as claimed in claim 1, wherein this character data correcting unit is based on the font size of these black character data and carry out the thinning process of line of the character of this interpolation character data of refinement.
6. image processing equipment as claimed in claim 1, wherein this character data correcting unit is carried out the thinning process that the line of the character that adds character data is somebody's turn to do in refinement in the maximum color departure scope of the output resolution ratio of this view data.
7. image processing equipment as claimed in claim 1 also comprises:
Spot forms the unit, is configured on image-carrier, form the solid spot of single at least color black; With
The concentration detecting unit is configured to detect the concentration of this solid spot, wherein
This character data generation unit and this character data correcting unit are carried out generation and this thinning process of these combining characters data respectively based on the concentration of this solid spot.
8. image processing equipment as claimed in claim 7, if wherein the concentration of this solid spot is less than predetermined threshold concentration, then this character data generation unit and this character data correcting unit are carried out generation and this thinning process of these combining characters data respectively.
9. an image forming apparatus comprises image processing equipment as claimed in claim 1.
10. image processing method comprises:
Sign black character data from color image data;
Through being added in these black character data as the interpolation character data, the character data of the color except black generates the combining characters data; With
Execution makes the line thinning process thinner than the line of these black character data of the character of this interpolation character data.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011087350A JP5729101B2 (en) | 2011-04-11 | 2011-04-11 | Image processing apparatus, image forming apparatus, image processing method, image processing program, and recording medium |
| JP2011-087350 | 2011-04-11 |
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| Publication Number | Publication Date |
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| CN102739917A true CN102739917A (en) | 2012-10-17 |
| CN102739917B CN102739917B (en) | 2015-08-12 |
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| US (1) | US8861018B2 (en) |
| JP (1) | JP5729101B2 (en) |
| CN (1) | CN102739917B (en) |
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| CN105313479A (en) * | 2014-07-18 | 2016-02-10 | 立志凯株式会社 | Printing apparatus |
| CN108012046A (en) * | 2016-11-02 | 2018-05-08 | 佳能株式会社 | Device, method and the storage medium of image are formed on the print medium |
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| JP6253440B2 (en) | 2014-02-18 | 2017-12-27 | 株式会社Ｓｃｒｅｅｎホールディングス | Vector data processing apparatus, image recording system, vector data processing method and program |
| JP2022018339A (en) | 2020-07-15 | 2022-01-27 | 株式会社リコー | Image formation apparatus, correction data derivation method and program |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20120257220A1 (en) | 2012-10-11 |
| JP5729101B2 (en) | 2015-06-03 |
| US8861018B2 (en) | 2014-10-14 |
| CN102739917B (en) | 2015-08-12 |
| JP2012222650A (en) | 2012-11-12 |
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